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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
4 days
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2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Problems
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Status
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Custom test
Problems
#
Name
46F
Hercule Poirot Problem
dsu
,
graphs
2300
x309
46E
Comb
data structures
,
dp
1900
x925
46D
Parking Lot
data structures
,
implementation
1800
x959
46C
Hamsters and Tigers
two pointers
1600
x2219
46B
T-shirts from Sponsor
implementation
1100
x3542
46A
Ball Game
brute force
,
implementation
800
x8396
45J
Planting Trees
constructive algorithms
1800
x895
45I
TCMCF+++
greedy
1400
x2309
45H
Road Problem
graphs
2100
x174
45G
Prime Problem
number theory
2200
x995
45F
Goats and Wolves
greedy
2500
x124
45E
Director
constructive algorithms
,
greedy
2000
x524
45D
Event Dates
greedy
,
meet-in-the-middle
,
sortings
1900
x1605
45C
Dancing Lessons
data structures
1900
x857
45B
School
dp
,
dsu
2200
x267
45A
Codecraft III
implementation
900
x6352
44J
Triminoes
constructive algorithms
,
greedy
2000
x555
44I
Toys
brute force
,
combinatorics
2300
x183
44H
Phone Number
dp
1700
x1681
44G
Shooting Gallery
data structures
,
implementation
2500
x366
44F
BerPaint
geometry
,
graphs
2700
x64
44E
Anfisa the Monkey
dp
1400
x4834
44D
Hyperdrive
math
1800
x692
44C
Holidays
implementation
1300
x3216
44B
Cola
implementation
1500
x1904
44A
Indian Summer
implementation
900
x9523
43E
Race
brute force
,
implementation
,
two pointers
2300
x375
43D
Journey
brute force
,
constructive algorithms
,
implementation
2000
x1049
43C
Lucky Tickets
greedy
1300
x4154
43B
Letter
implementation
,
strings
1100
x15770
43A
Football
strings
1000
x52413
42E
Baldman and the military
dfs and similar
,
graphs
,
trees
2700
x189
42D
Strange town
constructive algorithms
,
math
2300
x388
42C
Safe cracking
brute force
,
constructive algorithms
2200
x450
42B
Game of chess unfinished
implementation
1700
x922
42A
Guilty --- to the kitchen!
greedy
,
implementation
1400
x2760
41E
3-cycles
constructive algorithms
,
graphs
,
greedy
1900
x1904
41D
Pawn
dp
1900
x2191
41C
Email address
expression parsing
,
implementation
1300
x3648
41B
Martian Dollar
brute force
1400
x3878
41A
Translation
implementation
,
strings
800
x135783
40E
Number Table
combinatorics
2500
x655
40D
Interesting Sequence
math
2600
x125
40C
Berland Square
implementation
,
math
2300
x240
40B
Repaintings
math
1600
x1113
40A
Find Color
constructive algorithms
,
geometry
,
implementation
,
math
1300
x3862
39K
Testing
2600
x82
39J
Spelling Check
hashing
,
implementation
,
strings
1500
x2814
39I
Tram
2500
x123
39H
Multiplication Table
implementation
1300
x2613
39G
Inverse Function
implementation
2400
x123
39F
Pacifist frogs
implementation
1300
x1497
39E
What Has Dirichlet Got to Do with That?
dp
,
games
2000
x854
39D
Cubical Planet
math
1100
x3755
39C
Moon Craters
dp
,
sortings
2100
x569
39B
Company Income Growth
greedy
1300
x2570
39A
C*++ Calculations
expression parsing
,
greedy
2000
x657
38H
The Great Marathon
dp
2400
x264
38G
Queue
data structures
2300
x679
38F
Smart Boy
dp
,
games
,
strings
2100
x375
38E
Let's Go Rolling!
dp
,
sortings
1800
x2495
38D
Vasya the Architect
implementation
1900
x478
38C
Blinds
brute force
1400
x2089
38B
Chess
brute force
,
implementation
,
math
1200
x3414
38A
Army
implementation
800
x20578
37E
Trial for Chief
graphs
,
greedy
,
shortest paths
2600
x586
37D
Lesson Timetable
combinatorics
,
dp
,
math
2300
x389
37C
Old Berland Language
data structures
,
greedy
,
trees
1900
x1511
37B
Computer Game
greedy
,
implementation
1800
x864
37A
Towers
sortings
1000
x23656
36E
Two Paths
constructive algorithms
,
dsu
,
graphs
,
implementation
2600
x496
36D
New Game with a Chess Piece
games
2300
x676
36C
Bowls
geometry
,
implementation
2200
x325
36B
Fractal
implementation
1600
x1428
36A
Extra-terrestrial Intelligence
implementation
1300
x2900
35E
Parade
data structures
,
sortings
2100
x703
35D
Animals
dp
,
greedy
1700
x3159
35C
Fire Again
brute force
,
dfs and similar
,
shortest paths
1500
x6287
35B
Warehouse
implementation
1700
x990
35A
Shell Game
implementation
1000
x6627
34E
Collisions
brute force
,
implementation
,
math
2000
x563
34D
Road Map
dfs and similar
,
graphs
1600
x4867
34C
Page Numbers
expression parsing
,
implementation
,
sortings
,
strings
1300
x4077
34B
Sale
greedy
,
sortings
900
x48981
34A
Reconnaissance 2
implementation
800
x28564
33E
Helper
2600
x121
33D
Knights
geometry
,
graphs
,
shortest paths
,
sortings
2000
x1136
33C
Wonderful Randomized Sum
greedy
1800
x2875
33B
String Problem
shortest paths
1800
x4096
33A
What is for dinner?
greedy
,
implementation
1200
x3866
32E
Hide-and-Seek
geometry
,
implementation
2400
x321
32D
Constellation
implementation
1600
x1240
32C
Flea
math
1700
x2058
32B
Borze
expression parsing
,
implementation
800
x59146
32A
Reconnaissance
brute force
800
x12032
31E
TV Game
dp
2400
x1024
31D
Chocolate
dfs and similar
,
implementation
2000
x998
31C
Schedule
implementation
1700
x1728
31B
Sysadmin Bob
greedy
,
implementation
,
strings
1500
x4117
31A
Worms Evolution
implementation
1200
x9955
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